This standard specifies the terms and definitions, models, types, basic parameters and working conditions, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of external vacuum packaging machines. This standard applies to packaging bags that use plastics, composite films, etc., insert an air extraction tube at the opening of the packaging bag, vacuum through a certain (certain) control method, and heat seal the packaging bag when the air extraction time reaches the set value. Vacuum packaging machines (hereinafter referred to as packaging machines) are widely used in food, electronics, medical, textile and chemical industries.